Question 1.1: What is the force between two small charged spheres having charges of 2 × 10−7 C and 3 × 10−7 C placed 30 cm apart in air? Answer Repulsive force of magnitude 6 × 10−3 N Charge on the first sphere‚ q1 = 2 × 10−7 C Charge on the second sphere‚ q2 = 3 × 10−7 C econd Distance between the spheres‚ r = 30 cm = 0.3 m Electrostatic force between the spheres is given by the relation‚ Where‚ ∈0 = Permittivity of free space Hence‚ force between the two small charged spheres is 6 × 10−3 N.
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SISTEMAS DC Motors Catedrático: Ing. Gustavo Mendoza Leal Alumno: Alfredo Valdés Cárdenas Introduction A DC motor is a type of electrical machine that converts direct current into mechanical power by means of a magnetic field. DC motors are widely used in field applications because of their many advantages over AC motors such as speed control‚ high starting torque‚ quick starting‚ stopping‚ reverse and acceleration and free from harmonics found in AC. Applications of DC motors include but
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Reflection on field visit This report will outline my field visit at RSL aged care center. I was required to observe the nurses performing their roles‚ communication and safety practice in a professional working environment. While comparing the reality with my expectation‚ I have to reflect on what I felt‚ what had been my experience‚ and what I have to learn more. I am also required to be aware of any unsafe practice that might happen in that field and suggest a solution for it. In my imagination
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If my class received some money for a field trip‚ I would use it to go to Yellowstone. It would be the perfect place for a field trip because we would have oodles of exciting adventures. First of all‚ we would be able to observe many different species of wildlife in their natural habitats. If we were lucky‚ we might discover bears‚ elk‚ buffalos‚ coyotes‚ and maybe even wolves. When I visit the Park‚ I love to find a perch high on a hill and glance across the vast valley at all the animals
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Fabrication SemiTech Mr. Mark Benjamin Engineer SemiTech Dear Mr. Mark Benjamin This is the report for analyzing and recommends dope silicon for our company. In the report‚ I use the right-hand rule to determine the direction of the magnetic field‚ force acting in charge and the direction of moving charges. After that I use several equations to calculate the carrier concentration‚ hall coefficient‚ of the sample. It is an n-type semi-conductor. The resistance of the sample is 1.756 kΩ. The
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experiment. In this lab we are to experiment with the lines of force and equipotentials. We are also to find out vector field and the relationship between the lines of force and the electric field in this lab. Apparatus: Slightly-conducting paper‚ conducting-ink pen‚ digital multimeter‚ banana cables‚ alligator clips‚ power supply (from buss network)‚ cork board‚ probe‚ pushpins. I. Field Inside Capacitors: Find the equipotential lines in the region between the electrodes in 1.Parallel-plate capacitors-
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INTRODUCTION If an electric current flows through a conductor in a magnetic field‚ the magnetic field exerts a transverse force on the moving charge carrier which tends to push them to one side of the conductor. A buildup of charge at the sides of the conductors will balance this magnetic influence‚ producing a measurable voltage between the two sides of the conductor. This presence of measurable transverse voltage is the Hall Effect. The Hall effect was discovered in 1879 by Edwin Herbert Hall
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book “Optics” by Hecht sections 3.2 and 3.3 Speed of light: EM waves travel in a vacuum with speed c = c = 299‚792‚458 ms-1 exactly They are transverse waves with (vector) E and B field orthogonal to each other‚ for this section bold indicates vector quanties. When far from the source (many wavelengths) the E and B fields are in phase The vector E x B points in the direction of motion Travelling waves can be written as E = E 0 ⋅ ei ( kx −ωt ) and B = B 0 ⋅ ei ( kx −ωt ) 1 µ 0ε 0 Magnitude of B and
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3.3.3 In Class or Homework Exercise 1. The rectangular loop below is being pulled to the right‚ out of the magnetic field which points inward as shown. In what direction is the induced current? No current is induced in the top or bottom wire‚ since they are moving parallel to themselves. The only current induced is in the left wire‚ where the current is induced upward. The result will be a clockwise current. 2. If the solenoid below is being pulled away from the loop shown‚ in what direction
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theorems‚ as well as a reminder of the differential equation that describes wave motion. The two mathematical theorems that we need to remind ourselves of are: The surface integral of a vector field over a closed surface is equal to the volume integral of its divergence. The line integral of a vector field around a closed plane curve is equal to the surface integral of its curl. There are four basic equations‚ called Maxwell equations‚ which form the axioms of electrodynamics. The so called local
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